Hi Aaron,
Welcome to Texas. We aren't a historic site, but rather a history museum, and we do have some exhibits and programming on this time period, if you want to connect. Education@TheStoryofTexas.com; Bullock Texas State History Museum.
You should also connect with the Alamo, they do interpret the Spanish Colonial period, not just the revolution, and they've got some great classroom resources. education@thealamo.org
Also not a historic site, but you should connect with Lila Rakoczy <lila.rakoczy@glo.texas.gov> at the Texas General Land Office. As one of the archives in Texas, they have a lot of Spanish language documents and it wouldn't surprise me if they are developing resources for this time period.
I dont have a contact here, but we ourselves use the resources created by the rangers of the San Antonio Missions National Park: https://www.youtube.com/channel/UCm9cZHyyngelN-HyG8jvAYA
Best of luck,
Kaitlin Lloyd-Leva
Head of School Programs
Bullock Texas State History Museum
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Kaitlin Lloyd-Leva
Head of School Programs
Bullock Texas State History Museum
Austin TX
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